Main Entry: pat·u·lin Pronunciation: 'pach-&-l&n Function: noun : a very toxic colorless crystalline antibioticC7H6O4 produced by several molds (as Aspergillus clavatus and Penicillium patulum) called also clavacin,claviformin
patulin pat·u·lin (pāch'ə-lĭn) n. A toxic antibiotic that is derived from the metabolites of certain fungi, such as Aspergillus, Penicillium, and Gymnoascus, and has carcinogenic activity.